配比施肥对南方红豆杉幼林生长的影响  

Effects of Combined Fertilization on Young Growth of Taxus chinensis var. mairei

作　　者：金国庆[1] 余启国 焦月玲[1] 王月生 王晖 周志春[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]浙江省淳安县林业局,浙江淳安311700

出　　处：《林业科学研究》2007年第2期251-256,共6页Forest Research

基　　金：国家林业局重点科技推广项目"南方红豆杉短周期药用林高产栽培示范"([2005]74号)

摘　　要：研究了配比施肥对2年生红豆杉幼林生长的影响。结果表明,在土壤肥力中下,N、P及有机质含量稍低的情况下,N、P、K适当配比施肥能显著促进南方红豆杉生长,但过量施肥,则会抑制其生长。N、P、K不同配比施肥对南方红豆杉幼林生长的影响差异显著,施肥在抽梢长度、地径年生长量、分枝数和干物质积累(株干质量)上分别比CK高33.14%～80.77%、100.00%～161.90%、11.81%～47.17%和207.42%～325.05%。试验设置的15个配比处理中,以7号处理最佳,12号处理最差,前者在上述4个生长性状上分别较后者高47.63%、61.90%、35.36%和117.63%。P素对南方红豆杉幼林生长影响最大,缺P时增施N和K效果较差。N×P互作效应显著,配比施用N、P能显著促进南方红豆杉幼林生长。The result showed that appropriate combined fertilization of N, P and K nutrition could obviously enhance the young growth of Taxus chinensis var. mairei, but excessive fertilizer would restrain the growth, in the case of medium or poor soil fertility, lower content of N, P and organic matter. There were significant differences among the effects of various combined fertilization of N, P and K on young growth. The sprout length, collar diameter growth, branch number and dry matter accumulation under fertilization were more than the CK by 33.14% - 80.77% , 100.00% - 161.90%, 11.81% -47.17% and 207.42% - 325.05% respectively. Those four characteristics of 7th prescription, the best combination among 15 prescriptions, were more than that of 12th prescription, the worst one,by 47.63% , 61.90%, 35.36% and 117.63% respectively. P nutrition had the most important effect on T. chinensis var. mairei growth. The effect was poor to add the amount of N and K when the soil was lack of P. The interaction between N and P was significant and the combined fertilization could obviously promote the growth of T. chinensis var. mairei.

关 键 词：南方红豆杉 配比施肥 幼林生长 

分 类 号：S791.49[农业科学—林木遗传育种]